Now with AI and available fantastic libraries it's possible to play safe so that your body does not pay the price of your profession. EyesRhythm is build to help you keep the blink rhythm healthy by giving small audio / visual indication to maintain healthy blink rhythm not just by monitoring healthy blink rate but also keeping a watch on how rhythmic they are.
EyeRhythm also has a visual log for the neck movement. It is also capable to automatically track the face using multiple webcams that you might have on your working desk to get the best view of your eyes for accurate blink detection.
Most importantly it works completely local no internet required.